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The Tube Challenge is the accepted name for the Guinness World Record attempt to visit all of the London Underground stations in the fastest time possible, of which there are currently 270 (See List of Tube stations).

Several attempts have been notable enough to receive coverage in local or national news. The first in recent years were Geoff Marshall and Neil Blake, who, in May 2004, finally achieved the record with a time of 18 hours 35 minutes and 43 seconds. The attempt began at 05:29 at Amersham on the Metropolitan Line and ended at Upminster on the District Line - however, it took four months for Guinness World Records to recognise the attempt. Richard Graham also attempted the record on 19 February 2010, to raise money for Tearfund, a Christian organisation which uses funds churches in third-world countries.

A charity attempt, known as 'Tube Relief', was timed to begin after Marshal and Blake's May 2004 attempt. Paul Webb, from Clitheroe, joined 51 other people - including a New Orleans police captain - to raise funds for the London Bombings Relief Charitable Fund. They hoped to raise at least £20,000 through their efforts.

Other challenges
Though corresponding challenges have been recorded for numerous cities, including Paris, Berlin and Moscow, Guinness World Records only acknowledge attempts for London and New York. The latter is known as the Subway Challenge and takes longer than London to complete as there are substantially more stations on the New York subway.